Convolution Reverb for Live orchestra recording

I need help choosig the appropriate Software Reverb to add a hall convolution to a recorded orchestra on 10 channels and 1 stereo microphone (the listener). The end result will be in Stereo.

I plan to record the ensemble with 3 mics behind the orchestra (2 corners and back wall), 2 side mics, 3 mics in front of the orchestra (2 corners and wall) and 2 roof mics. These will all be Rode NT55 mics. There will also be a stereo AEA R-88 Ribbon mic for the direct sound (the listener) further away in front of the orchestra.

The orchestra will be recorded in a dry space (but large enough for the instruments to speak very well).

I then want to add convolution to the placed mics to imitate a larger hall of the same position from each aspect of the orchestra.

My favorite IR reverb is SIR (actually available as a free download!!)

However, I'm having a really hard time understanding your mic placement. I don't mean any offense, but this mic placement simply won't work. (unless you're going for a non-traditional sound that is more effect than music). Mic'ing an orchestra from the rear corners...overhead/ceiling mics...a blumlein pair in the audience...it just doesn't add up to a convincing stereo sound. Sorry...